Tool jack



Oct. 13, 1931. 'r. w. THORPE ET AL 1,327,120

TOOL JACK Filed March 28, 1928 2 Sheets-Sheet 1 Jzzzlezzlor M71655 J/zomis a750 e,

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Oct. 13, 1931. T. w. THCIDRPE ET AL TOOL JACK Filed March 28, 1928 2 Sheets-Sheet 2 Ill/1111011111101) ifzzvazzforfi v WM KY J @W m 4 Mine.

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Patented Oct. 13, 1931 UNITED STATES -PATE 1 root moi Application filed March as,

...The objectot our invention is toprovidea I tool jack ofsi1nple,-- durable, and comparatively inexpensive construction. 'r'Azfurther objectoip-our' invention is to provide a tool jack for use with toolssuch as wrenches wherein the wrenches maybe manipulated fortightening or loosening a'joint suchas thetype used in well boring outfits v where a threaded sleeve receives a threaded "10stud.' Q

Another object is toprovide in a jack of T this character arineans for exerting a greater force forv the final tightening ofthe joint without the usevofadditional operators to 1'5 operate the jack when finally setting the joint.

Still a-further object istoprovide ajack of this character in which an arcuate track is adapted to receive a jack member which 7 travels therea-longby a step by step movei ment which movement is obtained by the actuation of a'jack' handle and-an actuating pawl, with a means on one end of thetrack for obtaining additional power for moving *the tools to tighten or loosen a joint.

last mentionedw means in the form of a bracket secured to the track, a rod rotatablymounted relative to thebracket and"a sleeve screw threaded on the rod; the; sleeve :being arranged to receive one ofthe tools. Inthis manner the jack member may be manipulated tortighteningthe joint as much as possible and the screwthreaded rod andsleeve may han be manipulated'for; imparting additional lnovementto the tools tor tightening the .joint beyond 'a point possible bytheuse. 0t jthejack member alone. r

lVi-th theseand" other objects inview, our invention consists in the construction, ar- -.rangemenjt and combination'ot the; various partsof.ourdevicje,- whereby the objects contemplated are attained, as hereinafter more fully set torth,- pointed out-in our claims and illustrated in: the accompanying drawings. 1 Although the inventionis susceptible of a variety of embodiments,-it isunn'ecessary to fully describe and illustrate more than one in order to give a i I ventionboth from itsstructural and-function- Accordingly, gWG have illusadapted. V

ect is to provide this On the accompanying In wellboring outfits, suitable dia'ineter and lengthand as many of them are used as is necessary and thetool 12 up and ground and I casing isinserted for thewithdrawaloi wafull understanding of the in- 1928. Serial No. 265,249.

rnomAsw. 'rnonrn Ann enoaen n. THQRPE, or nus Mo -Es, IOWA trated a preferred and desirable embodiment of the invention in .the accompanying ings in which:

Figure 1 1s drawing our invention and illustrated in use.

*Figure looking in the direction.

Figure 3 is a side view illustrating a type of ing, tools for which Figure of the track the jack 'ing member of our device as line ir- Lot Flgure 1.

Figure 51s a sect onal view of Figure 4;. j 7

- Figure 6 is a perspective et member 46.

2 is a front elevation of the arrow 2. a

of Figure 1 partly in section joint used in well bor our ack is v particularly 4 is a side elevation partly in section member and the tightentaken on the view of the brack- Figure 7 is a perspective view ofwthe' threaded rod.

Figure 8 1s a perspective View of the threaded sleeve which coacts with the rod shown in Figure .7 an

thrust for turningthe rod.

Figure 9. is a sectionalvview through the in Figure .7 illustratich a bar may-be Figure 10 is a cross sectional View through the tool engaging'member ing74therein.

-70 with the'bushdrawings we have used the reference numeral 10 to indicate a dicates a tool which given weight for the tool 1'2.

to provide a The boring outcutting edge of the ter or oil as the casemay be Each of the rods per end with screw threaded the screw threaded stud 1d per end of the tool 12.

with a threaded opening down so that the lower tool may chisel intothe I 19 i provided at its upstuds similar to formed on the 'up- Eachstud l l-coacts 16 formed in the on the line as .rod such as used when boring wells. 12 inis secured to the. rod 10. the rods 10 are of, any

bore an opening .into which a l tool 12 or rod 10 below bottom of the rod thereabove. The upper most rod is secured to a cable running up to the well boring machine. It will be noted that the studs 14 and the openings 16 are tapered. This is so that when wear occurs between the threaded joints,-the flat surfaces 18 which frictionally engage each other may be ground or turned down and the threads in this way kept tight even after the rods and the tools have beenused considerably. The friction between the surfaces 18 is depended on for keeping the rod 10 in position relative to the tool 12 without unscrewing. It is therefore obvious that the joint must be tightened very tight in order to resist the continual pounding imparted on the joints by the up and down movement caused by the well boring machine.

In order to tighten the joint sufficiently for practical purposes a ack structure has been used which consists of an arcuate track having a means at one end for engaging a wrench 22. The wrench 22 coacts with fiat portions 24 formed on the tool 12 or rod below a predetermined joint.

The top of the track is serrated or provided with teeth 26 and a jack member 28 is slidably mounted on the track. The jack member 28 includes an operating lever 80 for moving a pawl 82 relative to the jack member. The pawl 32 coacts with the teeth 26 and when the handle is oscillated the member 28 will advance along the track 20 in the direction of the arrow 36 due to this coaction and oscillation.

A holding pawl 84 is provided to prevent reverse movement of the jack member 28. The jack member 28 is provided with a hook portion 38 under which the end of a wrench 40 is hooked. The wrench 40 coacts with flat or square portions 42 of the rod 10 above the joint being tightened whereby movement of the jack member 28 along the track will rotate the rod 10 above the joint relative to the the joint being ti 'htened. A brace 44 is usually provided to properly space the track 20 from tae rod 10 and tool 12.

On one end of the track 20 we mount a tightening device A which embodies our invention in the present instance. The ordinary types of tool jacks have merely a hook member substituted for our device A so that the jack 2 8 is entirely depended upon for tightening the joint. By this old method the joint can be made fairly tight by an operator but the final setting up of the joint for giving the desired tightness to prevent loosening of the joint when in operation can only be had by the assistance of other operators in oscillating the handle 30 and even in this case the joint is not made as tight as desirable.

It also requires the calling of other helpers or outsiders to assist in setting the joint to the desired tightness for operation.

manipulating the bar 80 The tighening device A consists of a bracket 46 having a pair of inwardly projecting lugs 48 adapted to coact with grooves 50 formed in the sides of the track 20. The bracket member 46 is held in position by a pin 52 extending into an opening 53 formed in one end of the track 20. The bracket 46 is provided with a cone shaped opening 54 the smallerend of which terminates in a concave seat 56.

A rod 58 extends through the opening 54 and is provided with a semi-ball shaped head 60. The convex side of the head is adapt ed to coact with the concave seat 56 so that the rod 58 may be swung universally relative to the bracket 46 within certain limits. The head 60 terminates in a cylindrical portion 62 having a groove 64 formed in the end thereof. A' pair of openings 66 extend through the portion threaded as indicated at 68. A toolengaging member 70 is provided consisting of a cylindrical or sleeve shaped portion internally screw threaded as indicated at 72. The

threads 72 are adapted to coact with the threads 68 on the rod 58. The threads 72 are preferably formed in a bushing 74 which is pressed into or otherwise secured in the tool engaging member 70 as shown in Figure 10 although they may be formed directly in the member 70 as shown in Figure 8. A

head 76 is formed on the member 70 and this head is provided with an opening 7 8. The

opening 7 8 is adapted to receive the end of a tool such as the wrench 22 illustrated in Figures 1 and 2 of the drawings.

Practical operation In the operation of our device the tools 22 and 40 are caused to coact with the portions 24 and 42 on each side of the joint to be tightened and the wrenches are manipulated to tighten the joint as much as possible by hand. The tool jack is then assembled in position as illustrated in Figures 1 and 2 and the jack member 28 is manipulated for tightening the joint as much as possible by the handle 30. Thereafter a bar 80 such as a crow bar may be inserted through 62. The rod 58 is screw one of the openings 66 in the head 60 and the 7115 rod 58 may in this manner be rotated for pulling the tool engaging member 70 toward the bracket 46. Since this is a screw threaded connection and considerable leverage may be exerted on the rod 58 by a single operator it is comparatively easy to set the joint very tightly.

Also for loosening the joint our device may be used by inserting the end of the wrench 40 N through the opening 7 8 and hooking the end of the wrench 22 over the jack member 28. The bar 80 may first be manipulated for starting the loosening movement of the joint after joint by the jack member'28.

Ordinarily the jack members 28 of tool jacks are provided with reversing mechanism but with my improved mechanism may be dispensed with as the device A may be used for loosening the tools so that the pawls 32 and 34 may be lifted for moving the jack member in a direction opposite to the arrow in operation for another tightening or loosening 1' ob. It will be obvious that we haveprovided an efficient means which is easily operated for tightening a joint very tightly or loosening such a joint without the help of adchtional operators in manipulating the ac z.

The groove 64 in the head 60 is adapted to receive the end of a wrenchwhen it is not necessary to use the device A for tightening orloosening a joint.

Some changes may be made in the construction and arrangement of the parts of our device" without departing from the real spirit and purpose of our invention, and it is our intention to cover by our claim, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

We claim as our invention:

In a tool manipulating shaped track, a tool jack on, said tool jack having a tool engaging portion, said bracket having a tapered opening and a concave seat around 'saidopening, a threaded rod through said opening; a convex shoulder thereon and engageable with said concave seat and an eye member having a tool receiving eye portion to receive an end ofa tool and aninternally threaded sleeve portion threaded on said ro THOMAS W. THORPE. GEORGE E. THORPE.

type of jack this I v 36 and thereby placing it device, an ar cand a bracket there- 

